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Pre-hospital care-seeking in patients with acute myocardial infarction and subsequent quality of care in Beijing

Chinese Medical Journal 2010年第6期123卷 664-669页

作者： SONG Li YAN Hong-bing HU Da-yi YANG Jin-gang SUN Yi-hong the 28th division Beijing Anzhen HospitalCapital Medical UniversityBeijing 100029China

Background Cumulative evidence demonstrates that primary percutaneous coronary intervention（PCI）is a mperfusion strategy for ST-elevation myocardial Infarction（STEMI）.this study was undertaken to evaluate the pre-hospital care-seeking pathway and subsequent care quality in patients with STEMI in the Beijing health care system,which offers patients a choice between seeking care in a small community hospital（SH group）or a large hospital（LH group）.Methods Between January 1 and December 31,2006, a cross-sectional and multicenter survey was conducted in 11 hospitals qualified as tertiary centers in Beijing and included consecutive patients with STEMI admitted within 24 hours after onset of *** Among the 566 patients interviewed,28.3%first arnved at a small community hospitaI and were transferred to large hospitals with the ability to perform primary *** median total pre-hospital delay in the SH group（n=160）was significantly longer than in the LH group（n=406）（225 vs.120 minutes,P〈0.001）.Multivariate analysis showed that interpreting symptoms to non-cardiac origin（OR,1.996;95%CI： 1.264-3.155）,absence of history of myocardial infarction（OR,1.595;95%CI：1.086-3.347）,non-health insuranca coverage（OR,1.931;95%Cl：1.079-3.012）and absence of sense of impending doom （OR,4.367;95%CI：1.279-1 4.925） were independent predictors for choosing small *** adjusting for demographics and medical history,patients in the SH group were 1.698 times（95% CI： 1.1 82-3.661） less likely to receive primary PCI compared with those in the LH group. Conclusions Above one fourth of the STEMI patients in Beijing experienced inter-hospital *** including symptoms interpretation,symptoms,history of myocardial infarcUon,and insurance coverage were associated with the patients＇pre-hospital care-seeking *** patients who were transferred had longer pre-hospital delays and were less Iikely to receive primary PCI.

关键词： acute myocardial infarction care-seeking pre-hospital delay percutaneous coronary intervention

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Comparison of Diver CE and ZEEK manual aspiration catheters for thrombectomy in ST-segment elevation myocardial infarction

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Chinese Medical Journal 2009年第6期122卷 648-654页

作者： ZHAO Han-jun YAN Hong-bing WANG Jian SONG Li LI Qing-xiang LI Shi-ying CHI Yun-peng WU Zheng ZHANG Xiao-jiang ZHAO Yong ZHENG Bin 28th division Beijing Anzhen Hospital of Capital Medical University Beijing 100029 China

Background A growing volume of data suggests that simple manual thrombus aspiration followed by direct stenting improves myocardial reperfusion and clinical outcome compared with conventional primary PCI, but there is still limited data comparing the in vivo performance among different devices. this study aimed to compare the efficacy and operability of thrombus aspiration by the Diver CE （Invatec, Brescia, Italy） and ZEEK （Zeon Medical Inc., Tokyo, Japan） aspiration catheters in ST-segment elevation myocardial infarction （STEMI） and their impact on 3-month outcome.Methods From September 2004 to June 2008, 298 consecutive patients with STEMI who received manual thrombus aspiration were involved in a single center retrospective analysis. Of them, 229 and 69 were treated with Diver CE and ZEEK aspiration catheters, respectively. Primary endpoints were myocardial blush grade （MBG）, thrombolysis in myocardial infarction （TIMI） flow grade, ST-segment elevation resolution （STR）, device pushability and trackability as judged by the frequency of usage of dual guide wires and aspiration efficacy as indicated by size distribution of aspirated thrombi. Secondary endpoints were 3-month outcome including left ventricular end diastolic diameter （LVEDD）, left ventricular ejection fraction （LVEF）, as well as cardiac death, target lesion revascularization （TLR）, re-infarction and their combination as major adverse cardiac events （MACE）. Results Baseline characteristics were not different between the two groups expect for a higher frequency of temporary cardiac pacing in the ZEEK group （ZEEK） than in the Diver CE group （Diver CE）（0.44% vs 5.8%, P=0.002）. Visible retrieved thrombi were achieved in 65.9% of the Diver CE and 68.1% of the ZEEK （P=0.74）. Aspirated thrombi were categorized as small thrombi （〈3.5 mm）, moderate thrombi （3.5-7.0 mm） and large thrombi （〉7.0 mm）. Small thrombi were more frequently seen in the Diver CE （61.6% vs 42.6%）, whereas moderate and larger thrombi wer

关键词： primary percutaneous coronary intervention ST-segment elevation myocardial infarction manual thrombus aspiration

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Safety and efficacy of coronary drug eluting stent for atherosclerotic stenosis of the small renal artery

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Chinese Medical Journal 2009年第10期122卷 1223-1226页

作者： LI Chun-jie WU Zheng YAN Hong-bing WANG Jian ZHAO Han-jun the 28th division Beijing Anzhen Hospital Capital Medical University Beijing 100029 China

Small diameter renal artery refers to the renal artery with the cross-section diameter less than 5 mm, the incidence of which is approximately 8%＇ Small diameter renal artery is common in patients with congenital multi-branch renal arteries, diabetes and multi-coronary artery lesions. Renal artery bare-mental stent （BMS） implantation is the standard treatment for ostial renal

关键词： drug eluting stent atherosclerotic stenosis small renal artery

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Impact of patients＇ symptom interpretation on care-seeking behaviors of patients with acute myocardial infarction

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Chinese Medical Journal 2010年第14期123卷 1840-1844页

作者： SONG Li YAN Hong-bing YANG Jin-gang SUN Yi-hong HU Da-yi the 28th division Beijing Anzhen Hospital Capital Medical University Beijing 100029 China Heart Center the People's Hospital of Peking University Beijing 100044 China

Background Delay in seeking medical care in patients with acute myocardial infarction （AMI） is receiving increasing attention. this study aimed to examine the association between expected symptoms and experienced symptoms of AMI and its effects on care-seeking behaviors of patients with AMI. Methods Between November 1, 2005 and December 31, 2006, a cross-sectional and multicenter survey was conducted in 19 hospitals in Beijing and included 799 patients with ST-elevation myocardial infarction （STEMI） admitted within 24 hours after onset of symptoms. Data were collected by structured interviews and medical record review. Results the median （25%, 75%） prehospital delay was 140 （75, 300） minutes. Only 264 （33.0%） arrived at the hospital by ambulance. the most common symptoms expected by patients with STEMI were central or left chest pain （71.4%）, radiating arm or shoulder pain （68.7%）, shortness of breath or dyspnea （65.5%）, and loss of consciousness （52.1%）. the most common symptoms experienced were central or left chest pain （82.1%）, sweats （71.8%）, shortness of breath or dyspnea （43.7%）, nausea or vomiting （32.3%）, and radiating pain （29.4%）. A mismatch between symptoms experienced and those expected occurred in 41.8% of patients. Patients who interpreted their symptoms as noncardiac in origin were more likely to arrive at the hospital by self-transport （86.5% vs. 52.9%, P 〈0.001） and had longer prehospital delays （medians, 180 vs. 120 minutes, P 〈0.001） compared to those who interpreted their symptoms as cardiac in origin. Conclusions Symptom interpretation influenced the care-seeking behaviors of patients with STEMI in Beijing. A mismatch between expectation and actual symptoms was associated with longer prehospital delay and decreased use of emerqency medical service （EMS）.

关键词： acute myocardial infarction symptom interpretation care-seeking prehospital delay

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Robust Strict Positive Real Stabilization for Uncertain Systems

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Science China Mathematics 1993年第1期36卷 117-128页

作者：贾英民高为炳程勉 the 7th Research division Beijing University of Aeronautics & Astronautics

this paper is devoted to the study of robust strict positive real stabilization for uncertain systems, i.e. considering how to design a single controller which can not only robustly stabilizes a plant with uncertainties under unity-feedback but also makes the closed-loop system robustly strictly positive real. though this problem is of important significance in robust control, adaptive control and network theory, it has not had more attention up to now. this paper covers the following problems: (1) Robust strict positive real stabilization criteria for uncertain systems are established. (2) the synthesis approach of a controllet is given, (3) Some applications to the asymptotic hyperstability robustness of nonlinear systems are introduced simply.

关键词： robust control strict positive realness uncertain systems system stabilization.

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阻挡层浆料特性对CMP后清洗效力的影响

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电子工业专用设备 2005年第7期34卷 23-28页

作者： D.Peters K.Bartosh C.watts C.Tran ATMI Surface Preparation Division2125 28th Street SWAllentownPA 18103 USAATMISurface Preparation Division2125 28th Street SWAllentownPA 18103 USAATMISurface Preparation Division2125 28th Street SWAllentownPA 18103 USAATMISurface Preparation Division2125 28th Street SWAllentownPA 18103 USA

铜化学机械平面化不同阻挡层浆料的应用引起了铜CMP后清洗的问题。阻挡层浆料的差异包含但不限于pH、研磨剂粒子材料和尺寸及铜腐蚀的抑制剂。为观察阻挡层浆料对清洗工艺的影响进行了清洗实验。阻挡层浆料不同于pH和所有作为铜抑制剂的... 详细信息

铜化学机械平面化不同阻挡层浆料的应用引起了铜CMP后清洗的问题。阻挡层浆料的差异包含但不限于pH、研磨剂粒子材料和尺寸及铜腐蚀的抑制剂。为观察阻挡层浆料对清洗工艺的影响进行了清洗实验。阻挡层浆料不同于pH和所有作为铜抑制剂的BTA材料。抑制性BTA溶液的pH值将确定BTA与铜复合物的特性和随后在清洗工艺中去除这种膜的条件。因此,为了研究pH、化学成份以及阻挡层浆料留在铜表面的BTA与铜的复合物去除的化学程序的影响而改变了清洗工艺。从而发现阻挡层浆料的pH值对各种清洗设备的效力均有影响,而且,某些添加剂和两步化学清洗工艺的使用,改进了可变pH值阻挡层浆料的清洗性能。这种工作的结果表明,在最佳结果中,清洗工艺应该致力于阻挡层浆料方面。

关键词：阻挡昙浆料 CMP后清洗化学机械平面化清洗效力铜腐蚀抑制剂

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What is the optimal initiation timing of angiotensin converting enzyme inhibitor treatment for maximum benefits in acute myocardial infarction patients？

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Chinese Medical Journal 2011年第3期000卷 464-466页

作者： YAN Hong-bing WANG Shao-ping Coronary Heart Disease Center Cardiovascular Institute and Fu Wai Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100037 China the 28th division Beijing Anzhen Hospital Capital Medical University Beijing 100029 China

Randomized clinical trials led to the clinical recommendation that angiotensin-converting enzyme inhibitors （ACEI） should be used as standard therapy in most patients experiencing an acute myocardial infarction （AMI）. However, the optimal initiation timing of treatment, as well as the exact mechanisms, have not been completely resolved, especially with the development of reperfusion strategy after AMI. Earlier initiation of ACEI might be associated with more prompt recovery of left ventricular ejection fraction due to more rapid attenuation of negative remodeling.

关键词： angiotensin-converting enzyme inhibitor acute myocardial infarction left ventricular remodeling

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Resistin might not be a risk factor for carotid artery atherosclerosis in elderly Chinese males

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Journal of Geriatric Cardiology 2014年第3期11卷 222-228页

作者： Hao WANG Yu-Tang WANG Li FAN Yu-Tao GUO Yang SHI Tao TAO Yue-Xiang ZHAO First Geriatric Cardiology division Chinese PLA General Hospital 28 Fuxing Rd. Beijing 100853 China

Objective To investigate the correlation between the serum resistin level and carotid artery atherosclerosis in elderly Chinese males. Methods the study enrolled 235 elderly Chinese males [median age 76 （range 60-97） years] scheduled for ultrasound examination of carotid artery plaque and determination of carotid artery intima-media thickness （CIMT）. they were divided into carotid atherosclerotic plaque （CAP） and carotid atherosclerotic plaque-free （CAP-free） groups according to the ultrasound results. their clinical profiles were col-lected, and the serum resistin and other blood biochemistry levels were *** the CAP group was older and had a thicker mean CIMT than the CAP-free group. However, there was no difference in the serum resistin level between the groups. CIMT was positively correlated with age （r = 0.299,P〈 0.001）. the serum resistin level was not correlated with CIMT, even after controlling for age. Multiple linear regression analysis revealed that age （β = 0.001,P〈 0.001） and body mass index （β = 0.002,P= 0.015） were significantly and posi-tively correlated with the mean CIMT. Only age [odds ratio （OR）： 1.159; 95% confidence interval （CI）： 1.078-1.183,P〈 0.001] was associ-ated with the presence of carotid artery atherosclerotic plaque. the serum resistin level was not correlated with the mean CIMT or associated with the presence of carotid artery atherosclerotic *** the results suggest that resistin might not be a risk factor for atherosclerosis in elderly Chinese males.

关键词： Resistin Intima-media thickness Atherosclerosis the elderly

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Temperature sensor based on PNR in Sagnac interferometer

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Chinese Optics Letters 2004年第5期2卷 259-261页

作者：杨远洪 the 5th Research division Beijing University of Aeronautics & Astronautics Beijing 100083

A temperature sensor based on polarization non-reciprocity (PNR) in fiber-optic Sagnac interferometer (FSI) was proposed. the experimental study was made primarily and the results agree with theory well. Discussion sh... 详细信息

关键词： Gyroscopes Optical sensors Polarization Temperature

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A Probabilistic Approach for Predicting Vessel Motion

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IEEE/CAA Journal of Automatica Sinica 2024年第8期11卷 1877-1879页

作者： Qi Hu Jingyi Liu Zongyu Zuo 7th Research division Beihang University(BUAA)Beijing 100191China 54th Research Institute of China Electronics Technology Group Corporation Shijiazhuang 050081China

Dear Editor,this letter addresses the challenge of forecasting the motion of real-world vessels over an extended period with a limited amount of available *** employing stochastic differential equation(SDE)modeling,we integrate both deterministic and stochastic components of the available ***,we establish a recursive prediction methodology based on Bayes’rule to update the model state when new measurements are ***,we develop a stochastic model tailored specifically to vessel dynamics and introduce an approximation method to tackle computational ***,we present an application example and conduct a comparative experiment to validate the effectiveness and superiority of the proposed method.

关键词： method stochastic letter

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